Copperas, or sulphate of iron, is used in dyeing black, in making ink, and as a dressing for crops. See IRON, p. 214.
Copperas,
Chambers's Encyclopaedia, Volume 3: Catarrh to Dion, p. 465
Source scan(s): p. 0476
Copperas, or sulphate of iron, is used in dyeing black, in making ink, and as a dressing for crops. See IRON, p. 214.